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HARLAN
Alexco and its subsidiaries own 100% of the 1,500-hectare Harlan property, located in the Mayo Mining District and accessible by helicopter from the North Canol Road and the village of Ross River. A 10-day field program undertaken to advance the property in August 2006 consisted of geologic mapping, soil sampling and ground magnetic surveying over a 2-square kilometer area. The property covers a broad area of strongly silicified and variably clay-altered sedimentary rocks intruded by sills and dikes of quartz-feldspar porphyries, similar to those seen at Brewery Creek.
Soil, talus fines and rock samples taken in 2006 show anomalous gold values throughout the area, with elevated gold contents associated with more intense silicification and clay alteration. Rock samples returned values to a maximum of 4.25 g/t gold and soil samples returned values to a maximum of 1.69 g/t gold.
A ground magnetic survey of the property shows that high-grade samples appear to be related to a structural break between the more highly magnetic intrusive sills and silicification and lower magnetic susceptibilities. Future plans for exploration include systematic detailed mapping and soil sampling to refine target areas in preparation for a first-pass drilling program.
SPROGGE
Alexco's Sprogge property is located 160 kilometers north of the town of Watson Lake along Yukon Highway 10. The property covers 5,630 hectares and is jointly held by Alexco's subsidiary (73%) and Newmont Canada (27%).
Several target areas identified at Sprogge show highly anomalous gold, arsenic, antimony and bismuth in rock chips and soils. Mineralization is associated with intensely altered and locally quartz-veined sedimentary rocks within the core of a regional antiformal structure cut by a series of east and northeast cross-faults. In 2000, NovaGold completed an initial 775 meter (2,550 feet) four-hole diamond drill program on the project.
On the northwestern end of the property, the Sugar Bowl Zone, measuring 2,400 meters by 1,200 meters, contains soil values grading up to 10.3 g/t gold and averaging over 100 parts per billion gold. More than 50 of the rock chip samples taken along the 2.5-kilometer ridge bisecting the soil anomaly contain multi-gram gold with grades as high as 34.8 g/t gold. Trenches have returned grades of 6.9 g/t gold over 12 meters and 9.6 g/t gold over 4 meters.
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